Mike buys a lemon of a video camera to record his girlfriend - Jenny's - Surprise birthday party only to find it's stuck on record. As the guests reveal secrets they would never want Mike to see, the party degenerates into a fight for control of the camera only for one guest to reveal a secret that they want Mike to see, making them the protector of the camera's revealing footage.

Mike Goodenough refused swear on set, resulting in him saying what the 'F' is going on rather at the film's climax.

Peter and Simon Hewitt wrote Surprise! over the course of a weekend whilst recording their conversations on their phones voice memo app.

The film looks like a single shot but is comprised of up to 15 cuts, the longest of which was over quarter of an hour.

The films pre-production and post-production all occurred over the space of two weeks, including writing the script, auditioning, preparing the location and eventually filming the product over the course of one weekend.

Peter Hewitt carried the camera the entire time.

All the windows were blacked out to enable 24/7 shooting.

Auditions were held at Dorset House School in Bury.

Dick Ward's character Alan is almost entirely comprised of CGI due to the actors death almost a day into shooting.

It is believed that Andy started a cult on set, practically ruining the originally planned finale which involved Mike performing multiple motorbike stunts off of the roof of the house.

It was -11 degrees centigrade on the weekend of the shoot.